Pith Number

pith:EAFT7KYP

pith:2006:EAFT7KYPFXSFA2PZTPICXZGOZ4

not attested not anchored not stored refs pending

BBN, ADTree and MLP Comparison in Separating Quasars from Large Survey Catalogues

Y. Zhang, Y. Zhao

arxiv:astro-ph/0612727 v1 · 2006-12-26 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EAFT7KYPFXSFA2PZTPICXZGOZ4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T14:58:40.402036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

200b3fab0f2de45069f99bd02be4cecf18218c8ecc664ec3592c65976da27cbd

Aliases

arxiv: astro-ph/0612727 · arxiv_version: astro-ph/0612727v1 · doi: 10.48550/arxiv.astro-ph/0612727 · pith_short_12: EAFT7KYPFXSF · pith_short_16: EAFT7KYPFXSFA2PZ · pith_short_8: EAFT7KYP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EAFT7KYPFXSFA2PZTPICXZGOZ4 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 200b3fab0f2de45069f99bd02be4cecf18218c8ecc664ec3592c65976da27cbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b32d499dddd06811d2ce27a79f275d716e20fe2896383127f6d1e5b43186a37",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-26T06:17:02Z",
    "title_canon_sha256": "25930d120e51c2cc2e3e30c5fd04ab443d882683b27f6e22a40e5871e373b1f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612727",
    "kind": "arxiv",
    "version": 1
  }
}